Telnet Telnet traffic is blocked from the WAN to the LAN
FTP FTP traffic is blocked from the WAN to the LAN
TFTP TFTP traffic is blocked from the WAN to the LAN
Web Web traffic is blocked from the WAN to the LAN
Ping. Ping traffic is blocked from the WAN/LAN

Работе это не мешает, зато если человек надумает поднять свой сайт или ФТП определенно помешает.